Connecting means



y 1933- A. ALSAKER 1,918,441

CONNECTING MEANS W7 Filed Feb. 8, 1936 fflven Z07 5m W WW 9% Patented July is, e e I IALYFBEDNALSAKE'R, orC ICAGO;.zLLmo s, AssIoNoR'To" TEE iJELTA-sTARY ELEcTRIc .t r v a ja ic iell,fiiear bru'arg s, "is so} serial 1N9. 426,960. a a

application a contiiiuation of my pending application fierial No. 325,-

' I: improvement and fnitherdevelopmentof the invention disclosed in Patent No, 1,638 ,23.(),

751, filed DecenibenB-Q.1928; and relates to connecting means. Whilelthe invention: of thepresentlapplication i's of gfe'ne-ral applica-,

'tion itisparti cularly useful for connecting j a niember such]as a collar, a handle, an oper-j .ating rod joint or-thelike to a hollow" rod or. pipe onto a cylindricalmerhber in general:

Th'elpresent'invention alsorelatesito a tool for perforating the Walljof a pipe 01f of-a" cylindrical member ingeneral."

prior patent, I have described in detailthe utility and the general-featuies of the clamps in'g means disclosedtherein andjthe mannerv 1n WhICli they are used, Therefore, a reper 'tltlQIlpf.tl16:d1SCUSSlQn 1s not c leen1ed nece s-l I ami hi p i on Theclampmg means disclosed. 1n my pri olt patent includes a set; screw for 1 positively looking a clamping memherltoja pipe. The

. set screw threads through the clamping meni- "si zevy as theshankaof the "screw. itselfu Tlie set screw being of comparatively heavy stock,

relatively large hole is made i'equiring the isz puilehed through thepipe; bfijtthe "frie lf I t on'al resistance ofierediby thes'urface of the. H

taking place. Fnrthermore byv n alnn eher land is. forced throughnthegwall of the pipe, cutting threads in the hole itgmakes as it travels: through. The thre a ded hole by the set screw is of substantially the same exertion of considerable force-to tnrn the set S re -throu h. a

jjortion ,of the set screw WhiCl'L- is forced through the pipe to a sinaller diameter than ""1 the threaded shank of thescrew,thesetfscrew na v 'bejdrriven home through the pipe with much 'less difficulty and yet siib sta ntially the same'positive locking le fl'ect is obtained. l hayealso discovered that a joint of-ample, K- strength is secured, leven'when that'portioii F of the S QtSLCITGW hichisforced'into theflpipe is-perfectly smooth, that-is, has] no threads;

With i set screw ol this kin d a smooth hole hOllm d l th Pip g nst h cr w t irne ll lg' out is" sufi'icie'nt to lpreventsuch f reduced portion of the set scfew whichis forced into the pipe perfectly l cylindi'ieal; that is, having the same diameter throughout oominominemnnns f a;"lttgttglhetei which is gained time My present invention is in thenatui'elofan the QWEVQFYml hQ hP it?ma u g u w than screws havings speclally shaped ends.

n j" Aec rding ;to one modification" forced. into the pif e isl smooth wean better; ndithe somewhat dufing theco'ilrse oftime, thep'b ig I i:

tiv'e'locking effect is till'miii itaih dbecause 7 that portion of ,the screw still in the} hole 1 will still be gripped by "the s de; wall (if-l the hole This result is to he contrasted With i i that whiclif woi ldlbe obtainedf with whichlforrne' dva tape red vhole ,Inthe'latter 1 uanta-an the end, off the g sc ew, ma made perfectly fiat, which iohyio'uslyi makes tion of the screw and the fiatendls l rgface s M l sufficient to sever the plnglp'nnehe'd? l l the Wall of theipipe. v

t, a y, ventionj, I provide "a set screw -Wl11ch lower s end portion of thejl jsci' few neanthe fiOp ejxtto the threaded '7 h a e, he "th ade i it b me r n'; 9 v I practically made. so that the; effort; necessary o fofif the,thread i o t bnin Qth tfiiek i l notadded'lto the maximum efl'ortzreq red, to punchgthe holesfilhe set screw has the a d-" of the set screw.will belfe aiiidl l g t as f resultoflwh ich asn optheri liole thro igli the". a I 1' j n actual co'nta ctfyytith jthe Isinifacefof the 43101 r "tfion;ofthesetgscrew theholeeand there} mo re: ,i'csistan tendency of the CGWQtOQtLlT H Io ulx'gy V. e

1fu th "E' i Q Zthetpi s n veii'tio n w provide an improved iclevisi and] P ptizif iw a? *sliownin Figure 1; v Figure 3- is bottom endjv'iew of the mecha-f.

f9 set screw.

P yoke constructionwhic'h is adapted to emscrew. The clev s may be used to-connect the pipe to a-oontrol rod or to. another pipe or it may be used in connection with another clevis to. connect two pipes together i and toa control rod. The construction is f lnth'e' drawing: j

deview of a section of an -op'eratingpipe connected to a control rod by means of myimproyed connecting device; 1

such that the yoke is held in place by means of. a singlebolt and itmay be removed from the clevis by merely loosening the nut and. Y withdrawn therefrom" without the necessity of sli d'ing eitherthe clevis or the yoke along the pipe. This particularly advantageous where a connection is to be made toea long,

pipe atua point intermediate its ends. By means ofthis construction it is not necessary to slide either-the clevis or the yoke along the pipe at one end thereof.

Theattainment of the above and further objects of 1 the present invention will beapf parent from the following specification 3 taken in. conju'notionwith the accompanying I 1.5 1 'When the lug 28' has been inserted into' theslot 11. theyoke 5 is turned 'so as to bringj' drawing forming a part thereof.

Figure '1 1s a s1 Figure 2 is affront .view of the mechanism ni msfiewli Figure to heic e s' Figure 4- a fragmentary sectionalview showing the Figure sea view of my'improved set s rewmn 1 Flgure. 6 is a View of'a modifiedforrn of Referring now more particularly to the drawing the connecting means comprlses es-' sentially two main parts, a clevis land a yoke 5.- TheYclevis 4. shown in the drawing is adapted to be connected to a pipe 6by'means of twoyokes 5 although it is' to be under stood ithat" a single yoke'may' be used if def sired, The clevis 4 is provided withsa cylin [drical surface 8 which is adapted to seat upon n the outside of r the pipe 6, said cylindrical surface extending slightly less than half way round,thecircumference' of thepi'pe. The

clevis is provided with two sets of" ears indicated at.10' 10 and 11-11 which ejxtendout I wardly therefromand are provided with 'a generally U-shaped slot. indicated at} 12-12 for receiving the ends of the yoke. The clevis between them. It to be noted thatthe arm's isprovidfed with a reinforcing ridge'15 and is provided with twospaced arms 16 and-f 17 for receiving a connectingcrank or the like 16 and 17 are not: equally placed .from the center line of the'cl e'vist The arms are of equal thickness and the distance'between the arm's and the center line of-the pipejexmanner of connecting the yoke I oeeds the'distance between the arm 17 and the center line of the pipe by an amount slightly in excess of thethickness of the arm 16. The yoke'5 has a cylindrical portion 20 which is adapted tosseaton thepipefi. A

pair of arms 21 and 22 extend from the curved v portion 23 of the yoke, said armsbeing tangent to the curve 20 of the yoke and being substantially 159*to vone another. A rein-. forcing projection 25 isflform'ed on the curved portion 23of the yoke, said reinforcing portion being'tappe d and threaded to receive a set screw indicated in general at 36. The end] of the arm 21 is screw threaded to receive a nut 26 and the end of the arm 22 has a lug 28 part 8 around the pipe and the 11 9 .28 of' the yoke is inserted into thei'U-shaped' slot 11 of the clevis., At}this time the armf21=isnot in embracing relationship to the pipe 6.

formed thereon and extending at right angles the arm 21 into the'correspondingslot 12 onthe opposite side of the clevis. "The bolt .26 is then placed upon the end 21 of'the yoke and is turned until it "slightly engages the projections on the clevis. 'It is of'course to be understood that if desired a washerjindicated'at 30, may be interposed between the'nut 26 and the'clevis. This washer may of'course.

be omitted if .desi're'dL-Q The fcleyis and the yoke may then be shifted along the pipe until they are brought into the desired position. A

17 oftheclevis'and a cylindrical spacer meme crank arm 33, of any approved construction, I

may then be inserted between the-arms "16 and I ber or washer 34 'may likewise -be inserted between the arms of the clevis. This Washer 3 1 isfofja thickness equalto the thickness of the jarm'16 whereby; the center line of the crank 33 is in line with the center of the pipe -2.I Al pin 35 maythen be'inserted" through I openings in the :arms'16'and17 and through aligned openings in the crank 33ca 1'1d in the washer spacer 34. This pin may be retained if desired. If. desired this" washer may be of a construction such as shown in my pending application Serial No. 325,752.; filed; December13; 1928',- although. it is to beunderstood that any other preferred construction may be used if desired. With the cra1ik3 fli 1isert ed'in placethe nut 26. is tightened to rigidly The set screw shown in Figure 5 hasa clamp the yoke and clevis to the pipe 6. The set'fs crew 36,} which is" of a construction. such as shown in either Figures- 5 or 6 iaayfthen bemounted in place in order to rigidly secure thecflevis'and-yoke against slidingmovement al'ongthe pipe;

in place by means ofa washer-or cotter pin 36 facilitate the turning thereof by 'means'of" a} or of any other-a'polygonalyshape orderto wrench orthe like,'"a threaded shank 43, and a smooth: cylindrical projection- 44 of con fsiclerably less' diamete'r than the threaded shank 43; The end of the projection l l is" substantially flat and .atright angles to the cylindrical surface {of the projection" 44,

forming a sh arp 'c'ntt-ing} edge at "45. The set. screwyafter being completely" machined a against corrosion, The"chrom iu1n plating gives the" set screw a better cuttingsurfa'ce' in that the end ofthe projection 44 will; stand up throiighout itse'ntiretravel' throngh the 'pipe As, a'result, a neater holej'fisobtai ned', and; the 1 projection 44 v is held'w therein rigidly Thy the frictional resistance between the projeIc-L tion 44 and the sidesof the hole formed there jection 7441s forced, into the pipe. gThis is accomplished primarily; by a punchi'i'i-g op-f oration with the sharp cutting edge at the juncture of the cylindrical surface oft'he pro:

je'ction and the end athereof'forcing the metal of the pipefi togive'. Becausethe area of theend of the set sc'rewiis relatively small, a

I "an extremely high unit pressure is obtained ing po'rtionf'of the set screw; and screwing the isets'crewJdowii'nntil this shoulder hears; a;

" heavily onthe surface of the pipe around the hole I find that theis'et screw tends to be held 1,withont applying morethan a moderate 5 turning eifort; By providing a shoulder between the threadedshank andv the perforat in place against looseningfrom the'p'ipe'.

The heavy pressure around the surface of the pipe immediately around the hole "causes the side walls ofthe hole 'tobe drawn tighter" against'theisides of the perforated portions of the set screw and thegreaterxthe pressure on the surfacejof the the tighter will the p 6 pingactionjgreatly increases the frictional '1 resi stan 'cefolfered by thef walls of 'thehole against any tendency of the screw to'becorne in Figurefi l have steam modified form v of t screw. 1 This set v c w is similar on showman Figure 5 diff rin ei from only ingthat a few threads, indicated at 50,;are provided at the ip'per end of the-pro je'cti'ng portion 44. These threads enter" the hole in the wall o'f the "pi'pexjnst'] before i the set screw driven completely home and form corresponding threads in the pipe with the resiilt that a better and; firmer union"is obtained. This action of the threadsZjO does" not take place until substantially the'entire;

gity biuaingthethfaa aenbbfedagip a a preciably to the efliort'req iired'to fforce*the" thread screvv homez l findgthat a hetjt er' oiiit I isj-securedbyproviding asqnarefithread' at Videdfofi the shank {om-he; screw'i Obviously thepitcliof; thethreadonithe'proj'ecting pom i 4 2; tlon oftheset screw should'fbe the;sa'mea-s thfpitch of the threadon the shank off he] s rews 1 v. v

re'move the yol ie' frorn theypipe -itrls r merely! necessary to first I unscrew) thei -set I i withdrawn from the slot 11] whereinvit ex-1m leaves'ithe -pil'ae 6and to removethe :bolt 26; f 1

Thearni'22'may:=then*be moved; in 'the'slot 11- generally clockwisedirectionasfseen in' TFig ure' 3; Duringflthis 'tllr'ning the arm 21 iSf tendedl After =a smalli a mountoi tu rnirrg oft F 1 this kind the voke may: befslid' alongthegsur face-52M the eaii ll so as toi'emoveitheyoke from the elevisl Iti'sto be noted that thejstir' '1' v I 55 3 face 52 makesjan angleofapproximatelvecti'on" 28 a'longathe' surface 152 is somewhat less thali 4=5gx i 7' clevis 4 at distances unequal from cen'-' clevis such as thejclevis 4 is tobe 'seonred toa cranksnch as l-w n 33gther'e;is'n ohparticn; I; 7 p-laradvantagefinthisnnequal spacing everwhen the crank 33 i's' toi be secu'r with the arm' 17hr the lower ole-v1 occup i g ajpositionco r sponding toithe o'sitioil' 'oc e tWO" a such clevls'esthen this unequalispacing is' of Y .a-" dis'tinct importance."Considerthefcase ofl two pipes such as the pipefiinalignment and 1- a a spaced apartlafewinches;" siipposethat it i i is' desired: to" oonnectbothYof those pipes to D withthe arm22 whentheyokeis lockedto the a "clevisij; Sincethe armel makes, an ang le-of I I approximatelywith 1 the arm 221th'en it is apparent that the amountj'of turn-ing of the V arm22in orclerjto'perinitfsliding"ofthepro- 5 i 1 i n ex neatam my new be givenbf 'the re'ason"for'placii githe a'rms 16 and 171;ofthe iss'ec'ured to the pipeh neatkthe I iespondingtothe airma l-6 of the lowei pipe ofthe pipes, thatis .o'n the'side opposite to "1 theside. occupie'd hythearml6 of the clevis v ei pp pip ifiai;o e m e i etW a a clevisessmay then lie-placed; in ngagement;

upper clevi's ema ls arm I17 or the lower v clevis, "Under those:"cponditirms the hole is v formed in the pipe so. that the neces must be somewhat longerthan'the pinsholwn p p I perjclevisIafA p a it p 3 ih ey'fth rib i'u ed'ito r evisesj togetherwith the" crank 33 in position he'twe'enthe varm 17 of the 50: rather than a V shaped threadas 'is 1 m;

tralf plane of the" pipe 2. NWhen 'a-isingle1P9 in Figure 2 since it must extend through, an

additional arm corresponding to the arm=16' of the lower clevis which arm 16-is now on a the outside of the arm-17 of the upper. clevis.

The; manner in whichithis is'done is clearly illustrated in my pendingapplication Serial N0.'.325;,751of whichthis application is a continuationinpart.

,While I: have herein Show and described my imp roved set screw and clevi's and yoke con'struction as used inconnection wit'h a pipe and a cr-ankforgimpart ng longitudinal motion .to thegpi'peitisof course to be under stoodthat the present invention is notlimited to' 'such' use sinceitheset screw may be used independently of the clevisand yoke e construction herein describedand' also it need "notbe used in connectionw-ith means for impartingamotion to a pipe I a I In compliance wih; the requirements of e the patent statutes I have herein'shown' and describeda preferred embodiment of my in;

vention. .It is however" to beunderstood providing the lower end'ot the screw with a v smooth cylindrical'extensi'on of-less diameter. than the threaded shank of the screw and in providing asharp cutting edge at the junctionof the lateral surface of the extension tion and the end surface thereoffor cutting i and the end surface thereofyrotatingthe screw' and contemporaneously advancing it into the material to cause a blank to be severed from 'the material by the advance of the h extension, and thereafteradvancingthe' 7 shankof-the-screw into theholeformedtby the removal: of the blank until the shoulder "between the; threaded shank and the cylindrical extension bears-against the surface of thematerial. V

3.; For use with a yoke having a threaded hole,='a-'screw-'having a threaded shankcoopcrating with thethreadiin said hole, c'harac terized by the fact that saidscrew is provided with a cylindrical end extension of.

smaller diameter than: the threaded shank,

said-extension having ,a continuous cirefuin-i ferentially extending cutt ng edger at the;

junction of the lateral surface of the projecits way into anobj ect towhich the yoke may be secured, and said extensionbeing integral with the threaded shank "whereby the per.iph eral' pressure'on the extensionserves to-lock the screw, against inadvertent rotation. and

retraction. I I 2. 4; For. use with a yokeadapted to fit against a pipe and havingathreadedh'ole;

a screw having athreadedshank: cooperating with the threadsin said hole, characterized by the fact that the screw; is provided with a" cylindrical extension of smaller diameter thanthe threaded shank for piercing its way into aVp-i'pe', portionto'f saidextension being threaded. h

5. -For use with'aq-yokeadapted to fit jagainst apipe and havinga hole with aft shaped thread-therein, .a screw having a shank with V-shaped threads cooperating with the threads in said hole, said screw having a cylindr cal extenslon of smaller diam eter than the threaded shank and comprising a punch adaptcdto punch'its way into a pipe,,,the1portion of said eXtensionneXt to the sliank having square threads.v

6. An integral self piercing screw comprising "a threaded, shank having means for portion of appreciably'reduced diameterat its 1 other end; said punching portion having a hardened wearing surface and being of a turningthe same a-tone'end and apunching cylindricaljshape and having a' sharp pircum- I ferential edge, thepart of-the punching portion adjacent the threaded'shank being screw threaded. I v I i- -7. An 1ntegral self piercing screw comprisinga threadedeshank having means for turningthe-same at oneend and av'punehing port on of appreciably reduced diameter at its other end, said punching portion having a hardened wearing surface and being of a cylindrical shape and 'havlngla sharp circumferential edge, the part of the punching portion adjacent the threaded shank being provided 7 with substantially j' square screw threads,

means comprising a self piercing set screw havinga threaded 'shankthreaded through said member and havinga hardened cylin- 8. Means for holdingia member embracing e aepipe aga nst turning-on the pipe, said drical punch portion adapted to bear against the pipe andto punch ahole in the pipe as the screw isadvanced, said punch I portion being an integral part of the screw wherebythe peripheral pressure exerted on the punch portion-by the adjacent'sheared metal serves to hold'the screw portion:

against becoming-loosened.

g.' tanipnnn, ALSAKERH o 

